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題名:健康年輕人執行多方向自主性跨步動作之動作表現與足底壓力中心研究     (16點)
Movement and Center-of-Pressure Characteristics of Multi-directional Volitional Stepping in Healthy Young Adults
著者:朱育秀(Yu-Hsiu Chu) ;湯佩芳(Pei-Fang Tang)
出版地區:台灣
出版城市:台北市
學科:物理 ; 醫學綜合
關鍵字:自主性跨步 ; 足底壓力中心 ; 反應時間 ; 動作時間 ; Volitional stepping ; Center-of-pressure ; Reaction time ; Movement time
刊名:物理治療
卷期:31卷3期(2006.6)
頁碼:198-205
語言:繁體中文
摘要: 中文摘要PDF ; 英文摘要PDF

背景與目的:自主性跨步動作測試是預測老年人跌倒的重要評估工具之一。本研究目的在探討健康年輕人執行向前、側、後三方向快速自主性跨步動作時之動作表現、足底壓力中心相關參數、及動作表現與足底壓力中心相關參數間之相關性。方法:16位健康年輕人(平均年齡23.1±3.7歲)接受雙下肢向前、側、後三方向各六次的跨步測試。動作表現方面量測其反應時間、動作時間、跨步步長及跨步速度;足底壓力中心方面則分析其移動軌跡、與前後向及側向最大位移。結果:側向跨步時的反應時間、動作時間與跨步步長在三方向跨步中最短(p<.017)。前向跨步時之跨步速度顯著高於側向跨步時(p<.017)。前、後向跨步時,足底壓力中心均先移向跨步腳;側向跨步時足底壓力中心則多先移向站立腳。足底壓力中心前後向最大位移在後向跨步時較前向跨步時大(p<.05);足底壓力中心側向最大位移則在側向跨步時最大(p<.017)。足底壓力中心前後向最大位移在前、後向跨步時皆與跨步步長及步速有中高度相關(r≥.71, p<.05);但無論跨步方向,足底壓力中心之側向最大位移則與跨步步長及步速均無顯著相關。結論:本研究結果顯示側向跨步與前、後向跨步之力學控制機轉與動作表現顯著不同。而在前、後向跨步動作中,足底壓力中心量化參數與動作表現有中高度相關,顯示足底壓力中心之量化分析有助於瞭解跨步表現好壞之力學成因。未來期能採用本研究結果作為評估老年人執行自主性多方向跨步能力之重要依據。
Background and Purposes: Performance of volitional stepping has been proposed as an importance assessment tool for predicting falls in older adults. The purpose of this study was to investigate movement characteristics and center-of-pressure (COP) related parameters associated with volitional forward, sideways and backward stepping in healthy young adults. Methods: Sixteen healthy young adults (mean age = 23.1±2.7 years) performed 6 trials each of rapid, volitional forward, sideways, and backward stepping with each leg. The movement characteristics investigated included reaction time (RT), movement time (MT), step length (SL), and step velocity (SV). The COP parameters examined included the COP trajectories, and maximum COP displacements in anterior-posterior and medio-Iateral directions (COPap and COOml, respectively). Relationships between COP parameters and movement characteristics were also investigated. Results: Sideways stepping presented the shortest RT, MT, and SL among the three directions of stepping (p<.017). The SV was significantly greater in forward stepping than in sideways stepping (p<.017). In both forward and backward stepping, the COP trajectory initially moved toward the stepping leg, whereas in sideways stepping the trajectory normally firstly moved toward the stance leg. The COPap was significantly greater in backward stepping than in forward stepping (p<.05); the COPml was greatest in sideways stepping (p<.017). The correlations between the COPap and SV and SL were moderate to high (r≥.71, p<.05) for forward and backward stepping, whereas those between COPml and SV and SL were not significant regardless of the step direction. Conclusions: The results indicated a different kinetic mechanism for sideways stepping compared to forward and backward stepping. The moderate to high correlations between the COP measures and movement characteristics suggest that quantitative COP measures could shed light on the kinetic causes that could explain the beha


    

本卷期目次
物理治療 31卷3期 (2006.6)
Initial Effects of the Ankle Dorsiflexion Mobilization with Movement on Ankle Range of Motion and Limb Coordination in Young Healthy Subjects/ Lan-Yuen GuoChich-Haung YangHenry TsaoChing-Yi WangChung-Chao Liang
學校身體活動訓練課程對智能障礙兒童之心肺耐力與病假天數成效探討/ 林素華蔡美文李淑貞林青松
跑步機對發展障礙兒童的治療效果-初步研究/ 甘蜀美廖華芳
健康年輕人執行多方向自主性跨步動作之動作表現與足底壓力中心研究/ 朱育秀湯佩芳
不完全脊髓損傷患者之步態表現/ 林佳貞蔡美文李淑貞曾明基嚴璐璐
實時性超音波造影量化腹直肌間距之信度研究/ 廖麗君劉欣玫蕭世芬
動作技巧學習:變異練習優於固定練習嗎?/ 嶺榮娟湯佩芳胡名霞
 
   
 
   

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